- Dec 5, 2015
Why do you think I included SMT in that estimation?So if one is at say 100 the other will be at 140, this for one thread..
In FP workload like CB an EXV module score 188 in respect of a single core, so 73% of this performance mean that a Zen core will be at 137 when loaded with two threads, that is, less than what you re stating for a single thread a few lines above, hey, that make a negative efficency for SMT...
A single Excavator CU running at 3.4GHz will score 144 in Cinebench R15.
144 * 0.73 = 105.12
105.12 * 8 = 840.96
The multiply the score produced by native cores by 1.10 - 1.25 to get the performance estimate for 8C/16T Zen (925 - 1051 points @ 3.4GHz).
Obviously it is currently impossible to say what kind of yield will AMDs SMT implementation produce, so I ceiled it to roughly the same figure as Haswell / Broadwell & Skylake achieves.